Narrative:

Jnu tower issued a departure clearance to aircraft X and closed. Jnu tower did not advise aircraft X they had an inbound strip on aircraft Y. Jnu AFSS called zan controller to advise aircraft X was beginning to taxi xa. Zan issued an xb void time. Aircraft Y was on the approach into jnu for runway 8. I instructed aircraft X that he was not to depart after XC00 while he was taxiing for runway 26. Aircraft X announced they intended to depart. I jumped on the radio and demanded that aircraft X (hold for release!); then advised zan. Zan informed me to advise aircraft X hold for release. As FSS specialist I am not allowed to control traffic. Aircraft X was departing after their void time directly into aircraft Y. Problem: with no radar and the fact that jnu tower is closed; no one can prove the exact time of departure. This happens on a regular basis with operators in an attempt to save fuel. If tower stayed open; aircraft X would have been instructed to hold short of runway and wait for the aircraft Y. This is positive control! When the tower closes at peak arrival and departure each night; it places excessive work and coordination on zan. Anchorage controller was overwhelmed. FAA reduced sju tower hours of operation. With the reduced tower hours; jnu AFSS handles most of the flts that occur after closing. Jnu AFSS is not located on the airfield and cannot see these aircraft arrive or depart.

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Original NASA ASRS Text

Title: JNU FSS SPECIALIST DESCRIBED NEAR SEPARATION EVENT BETWEEN ARR AND DEP AFTER TWR HAD CLOSED; FLT CREW ATTEMPTED DEP AFTER VOID TIME OPPOSITE TO ARR.

Narrative: JNU TWR ISSUED A DEP CLRNC TO ACFT X AND CLOSED. JNU TWR DID NOT ADVISE ACFT X THEY HAD AN INBOUND STRIP ON ACFT Y. JNU AFSS CALLED ZAN CTLR TO ADVISE ACFT X WAS BEGINNING TO TAXI XA. ZAN ISSUED AN XB VOID TIME. ACFT Y WAS ON THE APCH INTO JNU FOR RWY 8. I INSTRUCTED ACFT X THAT HE WAS NOT TO DEPART AFTER XC00 WHILE HE WAS TAXIING FOR RWY 26. ACFT X ANNOUNCED THEY INTENDED TO DEPART. I JUMPED ON THE RADIO AND DEMANDED THAT ACFT X (HOLD FOR RELEASE!); THEN ADVISED ZAN. ZAN INFORMED ME TO ADVISE ACFT X HOLD FOR RELEASE. AS FSS SPECIALIST I AM NOT ALLOWED TO CTL TFC. ACFT X WAS DEPARTING AFTER THEIR VOID TIME DIRECTLY INTO ACFT Y. PROB: WITH NO RADAR AND THE FACT THAT JNU TWR IS CLOSED; NO ONE CAN PROVE THE EXACT TIME OF DEP. THIS HAPPENS ON A REGULAR BASIS WITH OPERATORS IN AN ATTEMPT TO SAVE FUEL. IF TWR STAYED OPEN; ACFT X WOULD HAVE BEEN INSTRUCTED TO HOLD SHORT OF RWY AND WAIT FOR THE ACFT Y. THIS IS POSITIVE CTL! WHEN THE TWR CLOSES AT PEAK ARR AND DEP EACH NIGHT; IT PLACES EXCESSIVE WORK AND COORD ON ZAN. ANCHORAGE CTLR WAS OVERWHELMED. FAA REDUCED SJU TWR HRS OF OP. WITH THE REDUCED TWR HRS; JNU AFSS HANDLES MOST OF THE FLTS THAT OCCUR AFTER CLOSING. JNU AFSS IS NOT LOCATED ON THE AIRFIELD AND CANNOT SEE THESE ACFT ARRIVE OR DEPART.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.